The digital photos: Anglers must submit a photo of the fish lying flat next to a ruler showing the fish’s length and a BountyFishing Code number written on a piece of paper. A second photo showing the angler holding the fish close to his or her body.

Show those eyes: Because the BountyFishing forensic software uses the human eye and other reference points in the photo to verify the accuracy of your ruler, anglers can’t wear sunglasses or hats to shade their eyes.